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vladimir2022 [97]
3 years ago
7

4. Calculate the concentration of NaCl in a solution prepared by diluting 2 mL of 0.05 M NaCl to a total volume of 10 mL with de

ionized water. What is the total concentration of ions in the diluted solution
Chemistry
1 answer:
Shalnov [3]3 years ago
4 0

Answer:

Molarity of NaCl = Molarity of sodium ions = Molarity of chloride ions = 0.01 M

Explanation:

Considering

Molarity_{diluted\ solution}\times Volume_{diluted\ solution}=Molarity_{stock\ solution}\times Volume_{stock\ solution}

Given  that:

Molarity_{diluted\ solution}=?

Volume_{diluted\ solution}=10\ mL

Volume_{stock\ solution}=2\ mL

Molarity_{stock\ solution}=0.05\ M

So,  

Molarity_{diluted\ solution}\times 10\ mL=0.05\ M\times 2\ mL

Molarity_{diluted\ solution}=0.01\ M

<u>Molarity of NaCl = Molarity of sodium ions = Molarity of chloride ions = 0.01 M</u>

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Answer:

pH = -log₁₀ [H⁺]

Explanation:

pH is a value in chemistry used in to measure solution trying to determine each quality, purity, risks for health of some products, etc.

As you write in the question, [H⁺] = 10^(-pH)

Using logarithm law (log (m^(p) = p log(m):

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3 years ago
Concentrated HCl is 37% m/m. The density of the solution is 1.19 g/mL. Assume you have 100.0 grams of SOLUTION.
sdas [7]

Answer:

M HCl sln = 12.0785 M

Explanation:

  • molarity (M) [=] mol/L
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∴ mass sln = 100.0 g

∴ δ sln = 1.19 g/mL

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⇒ 0.37 = mass HCl / 100.0 g

⇒ 37 g = mass HCl

∴ molar mass HCl = 36.46 g/mol

⇒ mol HCl = (37 g)*(mol/36.46 g) = 1.015 mol

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⇒ M HClsln = 1.015 mol/0.084034 L

⇒ M HCl sln = 12.0785 M

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BY ANSWERING THIS QUESTION UR PUTTING IT ON UR MOM's LIFE THAT U WON'T STEAL MY POINTS.
Yakvenalex [24]

Answer:

T_2=-125.58\°C

Explanation:

Hello!

In this case, considering the Gay-Lussac's law which describes the pressure-temperature behavior as a directly proportional relationship by holding the volume as constant, we write:

\frac{T_1}{P_1} =\frac{T_2}{P_2}

Whereas solving for the final temperature T2, we get:

T_2=\frac{T_1P_2}{P_1}

Thus, we plug in the given data (temperature in Kelvins) to obtain:

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Does listening to music when you study increase your test scores? What is the independent variable?
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Answer:

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